Waste cone for a spindle

ABSTRACT

The waste cone is provided with a removable flange or pivotally mounted fingers which have outwardly directed extensions. The flange and extensions each serve to increase the radial extent of the upper end of the waste cone so as to trap larger quantities of waste material while preventing upward sliding of the accumulated waste.

Unlted States Patent 1151 3,695,01 8

Angst et a1. Oct. 3, 1972 [54] WASTE CONE FOR A SPINDLE 621,218 3/1899 Burr ..57/34 [72] Inventors: Kurt Angst, wiesengmndstrasse 2,942,403 6/1960 Elliott et a1 ..57/34 547 9545 Wang Marco T i 3,162,993 12/1964 Green ..57/34 R 2 t rth 3,283,489 11/1966 Bakker ..57/34 f f g g 3,543,499 12/1970 Takizawa ..57/34 [22] Filed: 4 1970 FORElGN PATENTS OR APPLICATIONS 1,079,512 4/1960 Germany ..57/34 [21] 60336 710,667 6/1965 Canada ..57/34 [30] Foreign Application Priority Data Primary Examiner-Wemer H. Schroeder g 6 1969 Switzerland 1 1974/69 Attorney-Kenyon & Kenyon Reilly Carr & Chapin 7 'lRA [52] US. Cl ..57/34 PW, 57/131 [5 ABS CT 5 1 Int. Cl. ..D01h l/38 The waste cone is Provided with a removable flange or 5 Field of Search 57/34 R 34 PW 34 T1" 13 1; pivotally mounted fingers which have outwardly 242/18 Ew, 18 pw directed extensions. The flange and extensions each serve to increase the radial extent of the upper end of [56] References Cited the waste cone so as to trap larger quantities of waste material while preventing upward sliding of the accu- UNITED STATES PATENTS mulated Wastel,821,556 9/1931 Layfield ..57/34 UX 20 Claims, 2 Drawing Figures WASTE CONE FOR A SPINDLE This invention relates to a waste cone and more particularly to a waste cone to be mounted on a spindle as used in drawtwisters.

Heretofore, it has been known in the winding of thread or yarn onto a tube mounted on a spindle of a machine, such as a drawtwister, to wind the material which has not been wound on the tube onto a waste cone disposed below the tube. The waste material on such cones has thereafter been disposed of by various techniques. Generally, in winding precisely prescribed thread lengths on each tube of a number of spindles, the threads for all the spindles must be threaded in the drawing elements and placed onto the spindle at crawling speed. Also, the material generated in this process, not being regularly drawn, must be wound onto the waste cone during this relatively long period of time so that considerable quantities of waste accumulate, particularly on the spindles which have been threaded first. However, the waste cones which have been used for taking up the not regularly drawn waste have not been able to hold the increased quantities generated particularly in processing heavy deniers. Furthermore, since the material has usually been wound rather loosely on the waste cone due to the reduced thread tension at crawling speed, the material has had an undesirable tendency to slide upwardly towards the tube and to cause other detrimental effects which could render the subsequent elimination of the waste cumbersome and time consuming.

Accordingly, it is an object of the invention to provide for the winding of a large amount of waste on a waste cone.

It is another object of the invention to facilitate the elimination of waste from a waste cone.

It is another object of the invention to prevent a sliding up of waste material into the region of a tube on which a package is being wound.

It is another object of the invention to provide a waste cone which is simple to manufacture at relatively low cost.

It is another object of the invention to provide a waste cone which is free of parts subject to wear.

Briefly, the invention providesa waste cone for a spindle such as used in a drawtwister which is capable of storing a large quantity of waste material during a spinning process. The waste cone is mounted on the spindle and cooperates with a means which serves to radially increase the upper limit of the waste cone significantly over the radial extent of the cone. This means is selectively positioned either in a first position with a tube disposed in place on the spindle to permit build up of a waste bunch of the waste material or in a second position with the tube and resultant package thereon removed from the spindle to permit removal of the waste bunch.

In one embodiment, the means for radially increasing the upper limit of the waste cone is constituted by a flange which is removably mounted on the upper end of the waste cone. This flange serves as an abutment to contain the waste material on the cone below the flange.

In another embodiment, the means for increasing the upper limit of the waste cone is formed by a plurality of fingers which are pivotally mounted at one end on the waste cone for radial displacement. These fingers are recessed in the side wall of the waste cone and are formed with extensions at the free end which define a plurality of circumferentially spaced abutments to contain the waste material therebelow when the fingers are pivoted outwardly of the waste cone. The fingers of each waste cone are further provided with cam surfaces which are exposed to engage the tube mounted on the spindle so as to move outwardly as the tube is slid downwardly into place on the spindle.

These and other objects and advantages of the invention will become more apparent from the following detailed description and appended claims taken in conjunction with the accompanying drawings in which:

FIG. 1 illustrates a partial side view and cross-sectional view of a waste cone according to the invention in place on a spindle; and

FIG. 2 illustrates a similar view to FIG. 1 of a modified waste cone according to the invention.

Referring to FIG. 1, a spindle blade 1 receives a waste cone 2 which is pressed onto the blade 1 directly against and above a whorl 3. The waste cone 2 is, as is known, provided with milled slots 4 distributed uniformly over the circumference of the cone 2 and which are arranged vertically and milled to increasing depth towards the upper end. In addition, a limiting flange 5 is set into the top part of the cone 2. This flange 5 has an outer radius R, which is considerably larger than the radius R of an upper flange 6 of the whorl 3. The flange 5 is also provided with a central recess 7 having a cylindrical side wall which is inserted into an opening 8 of the cone 2 having a conical or tapered mouth. ln order to secure the flange 5 axially and radially in the waste cone 2, a plurality of locking elements in the form of elastic cams 9 protrude at the outer circumference of the recess 7 and fit in a means such as a matching annular groove 10 of the cone 2. 0n a somewhat enlarged periphery of the flange 5, uniformly distributed radial recesses l 1 and 12 are provided in order to carry on the thread to be wound onto the cone 2. Furthermore, the recess 7 is provided with a central hole 13 to permit passage over the spindle blade 1. As shown, the outer rim of the flange 5 has a depending lip which serves to further define a contained space for receiving waste material 15.

In operation, the flange 5 is inserted with the central hole 13 over the tip of the spindle blade 1 and is dropped. The flange 5 then centers in the conical upper part of the opening 8 of the waste cone 2. The thread (not shown) is then fastened to the spindle blade 1 by means of a few wraps, whereupon a tube 14 is donned onto the spindle blade 1 so that the thread is clamped between an annular insert 14, as is known, of the tube 14 and the spindle.blade l. Simultaneously with the donning of the tube 14, the flange 5 is pressed into the opening 8 and the cams 9 lock in the groove 10. With the flange 5 in this position the spindle brake is opened and the spindle 1 rotates slowly. While the other spindles of the machine running at crawling speed are threaded up, the whole annular space between the outer dash-dotted connecting line between the two flanges 5 and 6 is available to be filled entirely or partially with thread which is not regularly drawn. Thus, the waste bunch 15 builds up until the thread is wound onto the tube 14 and the package build of package 16' is started at the normal operating speed. Upon completion of the package build, the spindle is stopped and the package 16 including the tube 14 are doffed. Next, the limiting flange including the waste bunch 15 are gripped with both hands and are lifted to a position away from the spindle blade 1 whereupon the waste bunch 15 is thrown away. In this manner, a waste bunch of relatively large size is achieved which furthermore can be eliminated in the most simple manner, i.e., without using any tools. The vertical slots 4 milled into the waste cone 2 are merely used for easier cutting subsequently of threads which might possibly remain entangled on the cone 2 by means of a knife. This cutting process, however, should be necessary very infrequently, as the limiting flange 5 permits chosing of a cone angle a somewhat larger than usual without danger of upward sliding of thread layers. In this manner, however, doffing of the entire waste bunch is facilitated.

An alternative to the waste cone design described above is shown in FIG. 2. In this case, the waste cone is provided with a plurality of fingers 16 each of which is supported and outwardly pivotably mounted at one end in respective slots 17 in the upstanding side wall of the waste cone. The fingers 16 which are recessed in the slots 17 are each provided at the lower ends with a limiting surface 18 which functions to contact the wall of a slot 17 so as to limit the outward pivoting of each finger 16. The upper part of each finger 16 is formed with-an extension 19 which projects towards the outside of the waste cone and is made from a soft flexible material, such as rubber, etc., in order to avoid accidents, particularly at high operating speeds. As shown to the right in FIG. 2, the extensions 19 are normally recessed within the slots 17 when the fingers 16 are in an idle position without the tube in place. Each finger 16 also has an upper surface 20 which is inclined downwardly towards the inside in order to engage the tube 21 which may also be provided with the conventional annular insert 21' so that upon insertion of the tube 21 from above, the tube 21 moves against the surfaces 20 to cause the fingers 16 to move outwardly into their operating position.

When the fingers 16 are in the outermost operating position, the waste cone is ready to take up the waste bunch 22. After doffing of the tube 21 containing the full package, the fingers 16 drop back into the idle position thus freeing the waste cone so that the waste bunch 22 can be doffed axially upwardly without obstruction and can be eliminated.

This latter waste cone (FIG. 2) uses no loose parts which must be lifted from the waste cone so that both hands of the operator are free for other manipulations.

What is claimed is: I

1. In combination with a spindle, a tube, a waste cone having a winding space, a whorl fixed on said spindle adjacent said waste cone and having a lateral flange common to both said whorl and said waste cone, and movable means for radially increasing the upper limit of the winding space of said waste cone, said means being selectively positioned in a first position with said tube disposed on said spindle to permit build up of a waste bunch in said winding space and in a second position with said tube removed from said spindle and from said movable means to permit removal of a waste bunch from said winding space.

2. The combination as set forth in claim 1 wherein said movable means includes a second flange mounted on one end of said waste cone in said first position and removed from said waste cone in said second position.

3. The combination as set forth in claim 2 wherein said second flange includes a central recess and a plurality of locking elements on said recess, and wherein said waste cone includes an opening receiving said recess therein and having means to receive said locking elements.

4. The combination as set forth in claim 2 wherein said second flange has an enlarged periphery.

5. The combination as set forth. in claim 2 wherein said second flange includes recesses in the peripheral edges thereof for carrying on thread to be wound on said cone.

6. The combination as set forth in claim 1 wherein said means includes a plurality of fingers pivotally mounted on said waste cone for radial displacement.

7. In combination with a waste cone for a spindle, a plurality of fingers pivotally mounted at one end thereof on said waste cone for radial displacement of an opposite end thereof from said waste cone to radially increase the upper limit of the winding space of said waste cone.

8. The combination as set forth in claim 7 wherein said waste cone includes a plurality of slots, each of said fingers being recessed in one of said slots.

9. The combination as set forth in claim 7 wherein each finger includes a surface thereon for limiting the outward radial displacement thereof.

10. The combination as set forth in claim 7 wherein each finger includes an extension at the free end extending radially outwardly of said waste cone.

1 l. The combination as set forth in claim 10 wherein each extension is made of soft elastic material.

12. The combination as set forth in claim 7 wherein each finger has a surface at the free end inclined downwardly towards the inside of said waste cone.

13. In combination,

a vertically disposed spindle,

a whorl on said spindle having a lateral flange extending therefrom,

a tube mounted on said spindle for doffing of thread thereon,

a waste cone mounted on said spindle below said tube and adjacent said flange for winding of waste thread thereon, and

radially retractable means extending radially from said waste cone at an end opposite said flange for radially increasing and decreasing the upper limit of the winding space of said waste cone, said means being of larger radius than said flange in an outermost operating position thereof.

14. The combination as set forth in claim 13 wherein said means includes a plurality of fingers mounted on said waste cone for radial displacement to enlarge the radius of said waste cone at the upper end thereof.

15. In combination with a waste cone for a spindle, a flange removably mounted on one end of said waste cone for radially increasing the upper limit of said waste cone, said flange including a central recess and a plurality of locking elements on said recess, and wherein said waste cone includes an opening receiving said recess therein and having means to receive said locking elements.

16. In combination,

a vertically disposed spindle a tube mounted on said spindle for dofiing of thread thereon,

a waste cone mounted on said spindle below said tube for winding of waste thread thereon, and

a plurality of fingers mounted on said waste cone for radial displacement to enlarge the radius of said waste cone at the upper end thereof.

17. The combination as set forth in claim 16 wherein said fingers are pivotally mounted at one end and include extensions at the opposite end for projecting outwardly of said waste cone upon pivoting of said fingers outwardly of said waste cone.

each said finger includes a surface inclined downwardly towards the inside of said waste cone engaging said tube whereby said fingers are moved outwardly of said waste cone upon movement of said tube downwardly on said spindle and against said surface.

19. The combination as set forth in claim 2 wherein said second flange extends radially outwardly of said laterally flange.

20. The combination as set forth in claim 15 wherein said locking elements are elastically deformable cams distributed along the circumference of said recess and wherein said means in said waste cone is an annular groove receiving said cams therein.

Patent No. a 95a I v D t d October 3, 19??! Inventor(s) Kurt Angst and Mirco Tunzini It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

IN THE TITLE PAGE 4 Assignee is Rieter Machine Works, Ltd.

Signed and sealed this 17th dey of April 1973.

(SEAL) A Attest:

EDWARD M.FLET( IHER,JR. ROBERT GOTTS CHALK Attesting Officer Commissioner of Patents FORM PC4050 uscoMM-oc 60376-P69 I Q .5. GOVERNMENT PRlNTING OFF'CE: I959 0-356-334 

1. In combination with a spindle, a tube, a waste cone having a winding space, a whorl fixed on said spindle adjacent said waste cone and having a lateral flange common to both said whorl and said waste cone, and movable means for radially increasing the upper limit of the winding space of said waste cone, said means being selectively positioned in a first position with said tube disposed on said spindle to permit build up of a waste bunch in said winding space and in a second position with said tube removed from said spindle and from said movable means to permit removal of a waste bunch from said winding space.
 2. The combination as set forth in claim 1 wherein said movable means includes a second flange mounted on one end of said waste cone in said first position and removed from said waste cone in said second position.
 3. The combination as set forth in claim 2 wherein said second flange includes a central recess and a plurality of locking elements on said recess, and wherein said waste cone includes an opening receiving said recess therein and having means to receive said locking elements.
 4. The combination as set forth in claim 2 wherein said second flange has an enlarged periphery.
 5. The combination as set forth in claim 2 wherein said second flange includes recesses in the peripheral edges thereof for carrying on thread to be wound on said cone.
 6. The combination as set forth in claim 1 wherein said means includes a plurality of fingers pivotally mounted on said waste cone for radial displacement.
 7. In combination with a waste cone for a spindle, a plurality of fingers pivotally mounted at one end thereof on said waste cone for radial displacement of an opposite end thereof from said waste cone to radially increase the upper limit of the winding space of said waste cone.
 8. The combination as set forth in claim 7 wherein said waste cone includes a plurality of slots, each of said fingers being recessed in one of said slots.
 9. The combination as set forth in claim 7 wherein each finger includes a surface thereon for limiting the outward radial displacement thereof.
 10. The combination as set forth in claim 7 wherein each finger includes an extension at the free end extending radially outwardly of said waste cone.
 11. The combination as set forth in claim 10 wherein each extension is made of soft elastic material.
 12. The combination as set forth in claim 7 wherein each finger has a surface at the free end inclined downwardly towards the inside of said waste cone.
 13. In combination, a vertically disposed spindle, a whorl on said spindle having a lateral flange extending therefrom, a tube mounted on said spindle for doffing of thread thereon, a waste cone mounted on said spindle below said tube and adjacent said flange for winding of waste thread thereon, and radially retractable means extending radially from said waste cone at an end opposite said flange for radially increasing and decreasing the upper limit of the winding space of said waste cone, said means being of larger radius than said flange in an outermost operating position thereof.
 14. The combination as set forth in claim 13 wherein said means includes a plurality of fingers mounted on said waste cone for radial displacement to enlarge the radius of said waste cone at the upper end thereof.
 15. In combination with a waste cone for a spindle, a flange removably mounted on one end of said waste cone for radially increasing the upper limit of said waste cone, said flange including a central recess and a plurality of locking elements on said recess, and wherein said waste cone includes an opening receiving said recess therein and having means to receive said locking elements.
 16. In combination, a vertically disposed spindle a tube mounted on said spindle for doffing of thread thereon, a waste cone mounted on said spindle below said tube for winding of waste thread thereon, and a plurality of fingers mounted on said waste cone for radial displacement to enlarge the radius of said waste cone at the upper end thereof.
 17. The combination as set forth in claim 16 wherein said fingers are pivotally mounted at one end and include extensions at the opposite end for projecting outwardly of said waste cone upon pivoting of said fingers outwardly of said waste cone.
 18. The combination as set forth in claim 16 wherein each said finger includes a surface inclined downwardly towards the inside of said waste cone engaging said tube whereby said fingers are moved outwardly of said waste cone upon movement of said tube downwardly on said spindle and against said surface.
 19. The combination as set forth in claim 2 wherein said second flange extends radially outwardly of said laterally flange.
 20. The combination as set forth in claim 15 wherein said locking elements are elastically deformable cams distributed along the circumference of said recess and wherein said means in said waste cone is an annular groove receiving said cams therein. 